Photons implying particle nature of light

Question

We know that in the photoelectric effect experiment, the particle nature of light was proved via photons. Again, we know that photon has energy $h\nu$ where $\nu$ stands for wavelength. After searching for a few posts in this wavelength, I came to know that the $\nu$ is actually the wavelength of light and not that of a photon,it is an elementary particle which the light is made up of. But since we are talking about the wavelength of light, do we mean that a wave is made up of particles? Also does that mean light has wave and particle property both simultaneously? If that's the case, is thinking light of infinite photons which are travelling in a way that looks like wave correct? Please enlighten me.

Answer 1

is thinking light of infinite photons which are travelling in a way that looks like wave correct?

No, light is composed out of a calculable number of photons per volume, not infinite. The classical electromagnetic wave emerges as a quantum addition of those photons. The quantum wave function of the photon controls the probability of finding it at (x,y,z,t) and probability requires an accumulation of events .

The best way to understand this is this single photon at a time experiment that in accumulation displays the wave properties characterizing the classical em wave.

Camera recording of photons from a double slit illuminated by very weak laser light. Left to right: single frame, superposition of 200, 1’000, and 500’000 frames.

So the random looking footprints of the photons in the first frame on the left, builds up the classical double slit interference pattern after a few million of dots.